3988681338 has 16 divisors (see below), whose sum is σ = 8446619520. Its totient is φ = 1251350976.

The previous prime is 3988681337. The next prime is 3988681369. The reversal of 3988681338 is 8331868893.

It is a super-2 number, since 2×3988681338² = 31819157632218940488, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3988681331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19552258 + ... + 19552461.

It is an arithmetic number, because the mean of its divisors is an integer number (527913720).

Almost surely, 2^3988681338 is an apocalyptic number.

3988681338 is an abundant number, since it is smaller than the sum of its proper divisors (4457938182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3988681338 is a wasteful number, since it uses less digits than its factorization.

3988681338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39104741.

The product of its digits is 5971968, while the sum is 57.

The square root of 3988681338 is about 63156.0079327375. The cubic root of 3988681338 is about 1585.9023661544.

The spelling of 3988681338 in words is "three billion, nine hundred eighty-eight million, six hundred eighty-one thousand, three hundred thirty-eight".